Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1988-05-13
1989-02-14
Stallard, Wayland
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75108, 75109, 75119, B22F 924
Patent
active
048044075
ABSTRACT:
A method is disclosed for recovering cobalt, which comprises adding ammonia to a cobalt chloride solution to a pH of from about 8.8 to about 9.6 with oxidation, to form hexammine cobalt (III) chloride, adding to the resulting solution of hexammine cobalt (III) chloride, sodium chloride in an amount sufficient to result in the precipitation of at least about 98% by weight of the cobalt as cobalt hexammine (III) chloride at a temperature of no greater than about 40.degree. C., separating the precipitate of cobalt hexammine (III) chloride from the resulting mother liquor which contains the balance of the cobalt, adding to the mother liquor, aluminum powder in an amount sufficient to result in the precipitation of the balance of the cobalt as cobalt metal, and separating the cobalt metal from the resulting spent liquor.
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Miller Michael J.
Scheithauer Richard A.
Vanderpool Clarence D.
Castle Donald R.
GTE Products Corporation
Quatrini L. Rita
Stallard Wayland
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